Food through the post -- a chap at work subscribed to Graze but ended up handing out boxes to colleagues. As Piers said, he needs to sort out a way to tailor content to customers' likes and dislikes. Otoh, presumably Graze makes money. On balance, I'm out, and I'm surprised so many dragons made offers given his current modest success is on the back of a web site someone else is paying for.
Airwheel -- is there a market? Like Segways and Sinclair C5s, it may be limited to a few hundred to leisure companies. Even there, as Peter suggested, it looks like a compensation claim waiting to happen as soon as someone falls and hurts themself or sends it flying into a bystander. I'm out.
Collapsible watering can etc -- collapsibility helps portability which is good, but also makes it easier for people to buy one set of camping (or glamping) gear and lend it to their friends. They got tied up with the patent and IP and so on. Tbh I did not really follow the complexities of the company structure and would have liked Evan Davies to explain it on a whiteboard (maybe a Magic Whiteboard from an earlier series).
Granny marmalade -- there have been a lot of people this series making food and wanting dragons' help to get on to the supermarket shelves. The branding was torn apart and the taste criticised as well. It did show -- as so many pitches showed -- the dangers of relying on asking your friends about your product.
Catch/throw game -- no-one mentioned the packaging looked like something from the 1970s. It just seemed like a terrible idea.
Boat repair kit -- they want to get the law changed! It was not really clear why they wanted the dragons. You have to wonder how many banks had previously turned them down. What was odd is that no-one asked them about patents, because this was one product in which it mattered.
A week late on iplayerFood through the post -- a chap at work subscribed to Graze but ended up handing out boxes to colleagues. As Piers said, he needs to sort out a way to tailor content to customers' likes and dislikes. Otoh, presumably Graze makes